Splitting of the 2{sup +} mixed symmetry mode in the proximity of the N=82 shell closure
Journal Article
·
· Physical Review. C, Nuclear Physics
- Dipartimento di Scienze Fisiche, Universita di Napoli Federico II, and Istituto Nazionale di Fisica Nucleare, Monte S Angelo, Via Cintia, I-80126 Napoli (Italy)
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 1784 Sofia (Bulgaria)
- Institut fuer Kernphysik, Universitaet Darmstadt, D-64289 Darmstadt (Germany)
The mixed symmetry 2{sup +} states in the N=84 isotones {sup 142}Ce and {sup 144}Nd are investigated within the quasiparticle-phonon model, with special attention to their M1 decay to the lowest symmetric 2{sup +} state. The observed pronounced splitting of the M1 strength is shown to be caused by the phonon coupling, made quite effective by the peculiar shell structure of the two-valence neutrons above the N=82 shell closure.
- OSTI ID:
- 21293782
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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